1573221880 has 16 divisors (see below), whose sum is σ = 3539749320. Its totient is φ = 629288736.

The previous prime is 1573221863. The next prime is 1573221887. The reversal of 1573221880 is 881223751.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1573221887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19665234 + ... + 19665313.

Almost surely, 2^1573221880 is an apocalyptic number.

1573221880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1573221880 is an abundant number, since it is smaller than the sum of its proper divisors (1966527440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1573221880 is a wasteful number, since it uses less digits than its factorization.

1573221880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39330558 (or 39330554 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 1573221880 is about 39663.8611332785. The cubic root of 1573221880 is about 1163.0453768140.

The spelling of 1573221880 in words is "one billion, five hundred seventy-three million, two hundred twenty-one thousand, eight hundred eighty".